Rotate objects for splines

Alright, so I setup my splines for my roads with the UE4 tutorial they did a while back.
And I tried to do the same thing for my walls, but it turns out that my walls are not rotated correctly. (Here it is with start and end posts) Is there anyway that I can change the objects rotation without re_importing the mesh?
P.S. I am well aware of the shape it is in.